Question: What is the type of quantum particle with the highest gyromagnetic ratio whose instance of is isotope of neutronium ?
Paraphrase: What is the type of quantum particle with the very best gyromagnetic ratio whose occasion of is isotope of neutronium ?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q22675015 . ?ent wdt:P2222 ?obj . ?ent wdt:P31 wd:Q12525553 } ORDER BY DESC(?obj)LIMIT 5 
Answer: neutron